No monster truck tires... meaning no super wide tractor treads, or no truck tires at all? That would eliminate al trucks. I don't do the wide 40 series type stuff either. You might like the Moabs for bashing... they have the rock crawler/ mud tire look. They look good on a 1/10 truck imo.
For 1/10 scale:
I like the Stampede for kids and bashing in the yard... makes a cheap basher without too many hopups.
The HPI Wheelie King would be a neat 4wd basher.
THe HPI 4wd nitro stadium truck "MT2" makes a good bahser too.... tough driven train and 4wd without the size and weight of a 1/8.
A 4wd buggy would be good too... the Tamiya Dark Impact is a cool car. I have thought about getting one of those for my kids.
Then there is the big stuff... emaxx..savage..all the 1/8 buggy/trucks... ANY 1/8 buggy or truck would work good.
If you like the buggies here's an Ofna hyper7 roller for about $200
http://www.nitrohouse.com/blowout_specials.htm